21%
The atmosphere is 79.9% oxygen.
About 21% of the Earth's atmosphere is oxygen.
Mars does have an atmosphere, but it doesn't have much. The thin atmosphere of Mars is almost entirely carbon dioxide (95.3%) with about 2.7% nitrogen and 1.6% argon. The free oxygen content is only about 0.13%, with most of the oxygen bound to the oxidized rock on the surface of the planet.
The main components of Earth's atmosphere are nitrogen and oxygen. Of these, oxygen is the one we can't live without.
Mars has an atmosphere, though it is different than our atmosphere here on Earth. The atmosphere of Mars is thin, cold, and dry and contains much less oxygen than the atmosphere of Earth. The oxygen content of the Martian atmosphere is only 0.13 percent, compared with 21 percent in Earth's atmosphere. Carbon dioxide makes up 95.3 percent of the gas in the atmosphere of Mars. It also contains nitrogen and argon and very small amounts of water and methane. Additionally, the atmospheric pressure on Mars is only about 1/100 that of Earth's!
The atmosphere is 79.9% oxygen.
No it isn't. We still have about 21% oxygen content in the atmosphere.
The layer with the highest oxygen content in the Earth's atmosphere is the troposphere, which is the lowest layer where we live and where weather occurs. As you go higher in the atmosphere, the oxygen concentration decreases.
Oxygen makes up about 21% of the Earth's atmosphere.
The layer of the atmosphere with the highest oxygen content is the troposphere, the lowest layer where most weather events occur. About 20.9% of the air in the troposphere is composed of oxygen.
Oxygen content is highest in the troposphere, which is the lowest layer of Earth's atmosphere where most weather occurs. Approximately 21% of the air in the troposphere is composed of oxygen.
Lower .
Oxygen content is highest in the troposphere, which is the lowest layer of Earth's atmosphere. Approximately 20% of the troposphere's gas composition is oxygen, making it the layer where oxygen is most abundant.
Lower .
The oxygen content of air is approximately 21%. Nitrogen is the largest component of air as it takes up 78% of the atmosphere.
because most combustible gas meters are oxygen dependent and will not provide reliable readings in an oxygen deficient atmosphere .. balls
The current oxygen content in the atmosphere is about the same as it was millions of years ago. Oxygen levels on Earth have been relatively stable over long periods due to the balance between oxygen production and consumption by various processes such as photosynthesis and respiration.